code: def uniq(lst):
      s = set()
      rval = []
      for l in lst:
          if id(l) not in s:
              s.add(id(l))
              rval.append(l)
      return rval
  
imports: from __future__ import print_function
  from __future__ import absolute_import
  from builtins import str
  from builtins import zip
  from builtins import range
  from builtins import object
  import sys
  import numpy
  from .pyll import Apply
  from .pyll import as_apply
  from .pyll import dfs
  from .pyll import toposort
  from .pyll import scope
  from .pyll import stochastic
label_desc: Use image node_id 6 for calling a global function with example usage: uniq(lst) and returns: rval